the product really gives the marker a crisp feel. you can practically feel the air whizzing through the gun everytime you shoot. it really brings down kick. the gun feels like it's popping when you shoot a ball. The valve never leaks when you get low on air like the stock one did.

Weaknesses:

buzzed a bit when i first got it. then I started to liek the buzz, then the valve got worn in and it went away and it just feels good now.